Granted Patent
Utility
US 4,573,994 · App. 06/327,818
Refillable medication infusion apparatus
Inventors:
Robert E. Fischell, Peter C. Lord
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Dec 7, 1981
Inventors
Robert E. Fischell
Peter C. Lord
Assignee (at issue)
The Johns Hopkins University
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.